I need a compound with a name that I could abbreviate HNO (you know, like EDTA, TRIS, PIPES and so on). Organic chemistry is a closed book to me, the best I could think of was that O could stand for oxime and N for nicotinic aldehyde; that gives NO for nicotinic oxime, when nitrogen gets protonated I end with something that could be named HNO. But I suppose there are tons of known compounds with names that can be abbreviated this way, I just don't know them.
Note: abbreviation SCN will do as well. In fact any abbreviation that is three letters long and is part of known formula (KOH is OK, HCN is OK and so on) will do.
Any ideas?